Residual stresses in welded I section steel members

Trayana Tankova*, Luís Simões da Silva, Marimuthu Balakrishnam, Dulce Rodrigues, Benjamin Launert, Hartmut Pasternak, Tin Yadanar Tun

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

27 Citations (Scopus)

Abstract

Residual stresses have major influence on the stability of steel members. It is well-known that, due to the differences in manufacturing procedures, the residual stresses for welded and hot – rolled members are rather different. In the same way, despite several studies on residual stresses distribution and magnitude for hot-rolled members were already done, for prismatic and tapered welded I section steel members the investigation is still very scarce. In the current work, an experimental programme on the buckling resistance of tapered members, with different tapering ratios and section heights, was conducted and residual stress measurements were carried out using the sectioning method. Numerical simulations of the heat input during welding were also performed in order to predict the residual stress fields. A statistical analysis of the residual stresses distribution for welded I section members was performed, using the experimental and numerical results, as well as literature data. Systematized information on residual stresses distribution and magnitude was generated and some guidelines for the statistical characterization of residual stresses in welded members were proposed.

Original languageEnglish
Article number109398
JournalEngineering Structures
Volume197
DOIs
Publication statusPublished - 15 Oct 2019
Externally publishedYes

Keywords

  • Eurocode 3
  • Experimental tests
  • I section
  • Residual stresses
  • Stability
  • Steel
  • Welded sections
  • Welding simulation

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